CN104713425A - Pole member for a pyrotechnical igniter of an inflator, igniter, inflator and airbag module comprising said pole member - Google Patents
Pole member for a pyrotechnical igniter of an inflator, igniter, inflator and airbag module comprising said pole member Download PDFInfo
- Publication number
- CN104713425A CN104713425A CN201410722958.1A CN201410722958A CN104713425A CN 104713425 A CN104713425 A CN 104713425A CN 201410722958 A CN201410722958 A CN 201410722958A CN 104713425 A CN104713425 A CN 104713425A
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- CN
- China
- Prior art keywords
- component
- fixed component
- inflator
- igniter
- bar
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R2021/26029—Ignitors
Abstract
The invention relates to a pole member (11) as prefabricated subassembly for a pyrotechnical igniter (10), especially for an inflator comprising two electrically conductive contact pins (14) embedded in an injection-molded part (13), wherein a fixing member (20) for anchoring the pole member (11) in the inflator is embedded in the injection-molded part (13), wherein the contact pins (14) extend through a through-hole (21) of the fixing member (20) and wherein one or more sealing components (32) are formed or arranged in or on the fixing member (20). Furthermore, the invention relates to an igniter, an inflator and an airbag module comprising such pole member.
Description
Technical field
The present invention relates to for pyrotechnic igniter, be particularly useful for the bar component of the inflator of preamble according to claim 1.In addition, the present invention relates to the igniter, inflator and the air bag module that comprise this bar component.Originally mention that the bar component of type is such as known by WO2007/003802A2.
Background technology
About inflator, the sub-component of pyrotechnic igniter is referred to as bar component.Bar component comprises two conductive contact pins be embedded in injection molding part.Contact plug is given prominence to from injection molding part at least on a side and is formed plug-in type contact to be connected to trigger controller by this kind of mode.
This bar component is shown as a part for pyrotechnic igniter by WO 2007/003802A2.Except bar component, pyrotechnic igniter comprises the bridging line that two contact plugs are electrically connected to each other.Bridging line is crossed over the cartridge ignition material encapsulated by lid and is extended.Lid blocks, wherein in the free space of cartridge ignition material arrangements between lid and bar component by bar component.
The igniter of this type to be normally used in inflator and to be thus connected the housing of inflator.
When the igniter that will manufacture in advance, as the igniter such as according to WO2007/003802A2, when being connected to the housing of inflator, the primary attention item that must take prevents moisture from penetrating into inflator.Therefore, to the connection between igniter and inflator housing, there is extra high compactness requirement.These requirements are realized by additional sealing element usually, thus known igniter comprises the parts of relatively large amount.Especially also due to required treatment step extra in the assembling process of known point firearm or bar component, therefore which results in high manufacturing cost.In addition, there is high requirement with the potted component of O shape loop type to manufacturing tolerance about usual, further increased manufacturing expense thus.
Summary of the invention
The object of the invention is to describe the bar component for the pyrotechnic igniter of inflator, it comprises simple structural design and in assembling process, ensure that the excellent sealing in the housing of inflator.In addition, the object of the invention is to illustrate the igniter, inflator and the air bag module that comprise this bar component.
According to the present invention, this object is realized by following manner: with respect to the air bag module of the bar component of the theme of claim 1, the igniter with respect to the theme of claim 9, the inflator of the theme with respect to claim 11 and the theme with respect to claim 13.
By this kind of mode, the present invention is based on the bar component of statement as the sub-component manufactured in advance of the pyrotechnic igniter for inflator, described bar component comprises two the conductive contact pins be embedded in injection molding part.In addition, the fixed component for being anchored in inflator by bar component is embedded in injection molding part.Contact plug extends through the through hole of fixed component.According to the present invention, in fixed component or on formed or arrange one or more seal member.
According to the application, bar component is interpreted as it is the single sub-component of pyrotechnic igniter, and wherein all element portion is all permanently connected together.Especially, element portion closely can be interconnected with injection molding part around them by injection mo(u)lding, and described injection molding part is formed by described injection mo(u)lding.Sub-component and bar component can not correspondingly be decomposed in non-destructive situation.Specifically, bar component can comprise two conductive contact pins, fixed component, injection molding part and one or more seal member.
Seal member especially can be formed directly into bar component place.By this kind of mode, avoid the additional sealing element of the igniter for inflator.Bar component according to the present invention has especially simple structure thus, makes the manufacturing cost for bar component very low.Because seal member is formed directly on fixed component or in fixed component, therefore under the pinpoint situation of separate seal elements need not be observed, in the situation of the inflator of complete installation, achieve the inner space of inflator to the security seal of the space outerpace of inflator.
In the preferred embodiment of bar component according to the present invention, injection molding part comprise or comprise especially can comprise fiber reinforcement polyphenylene sulfide (PPS), polyphthalamide (PPA) plastic material, and/or by the plastic material of crosslinking with radiation.Contact plug and fixed component can embed in a plastic material thus or can by the injection-molded plastic material forming injection molding part around.Injection molding part can the mainly external form of shaped bar component or profile.
Fixed component preferably includes or comprises metal.Fixed component is used for housing bar component being closely connected to inflator.In order to be absorbed in the active force produced in the ignition process of pyrotechnical charge fully, tight and stable connection the between bar component and the housing of inflator is favourable.The material that metal is used as fixed component is guaranteed bar component suitably to remain in the housing of inflator.Especially, can use between fixed component with inflator housing and such as weld and/or the highly stable joining technique of curling joint.
In another preferred embodiment of bar component according to the present invention, fixed component has the cross-sectional diameter larger than injection molding part.By this kind of mode, bar component is made to be fixed in the housing of inflator definitely on the one hand.Such as, can by the packaging shell fixed component of curling inflator.In addition, in installment state, the distance of heat insulation function between injection molding part and the housing of inflator is met by the different cross-sectional diameter between injection molding part from fixed component.Especially the heating due to inflator housing is prevented to make Deformation of Injection Molded Plastic Parts.
As a rule, different seal members can be used in installment state to come near inflator housing seal bar component.Seal member is generally used for suppressing the leakage path between the parts of plastics of inflator and metallic member.Especially, can realize closing the connection between injection molding part and fixed component under the assistance of seal member, that is, inhibit from the inner leakage paths to outside of inflator.
One or more seal member can be provided with basically.At least one seal member as additional sealing element, especially can be formed on the fixing element as diaphragm seal, shrinkage hose and/or adhesive seal material.Additional sealing element closely can be connected to fixed component.Specifically, additional sealing element can be connected to fixed component by bonding and/or sulfuration.In preferred modification, potted component comprises the O shape ring be arranged in the clamping recess of fixed component.Be fixed preferably by O shape ring is clamped in clamping recess thus prevents O shape ring unexpectedly to remove.
As an alternative or additionally, at least one seal member can be formed in fixed component by the geometry designs of fixed component.Especially seal member can be formed by least one recess in fixed component, at least one undercutting and/or at least one groove.In other words, can by suitable shaping for this purpose and the fixed component self showing structure specially forms seal member.In fixed component self, form at least one seal member facilitate the manufacture of bar component and decrease the quantity of parts.
Preferably, fixed component can be the form of disk or ring.By this kind of mode, fixed component can have round-shaped in outer circumference.This facilitate that fixed component arrives the connection of the circular inflatable engine housing of such as inflator pipe.
Preferably, seal member is formed or is arranged at least one end face of fixed component or at least one end face.The end face of fixed component be easy to can close to and make it possible to simplify the layout of seal member thus.In addition, the end face of fixed component be fixed component in the region of end face especially easily geometry designs provide enough surfaces.
In addition, seal member can extend through the through hole of fixed component.By this kind of mode, further improve the sealing between injection molding part and fixed component.
Bar component according to the present invention preferably forms the sub-component of the igniter for inflator.Disclose in the scope of the independent aspects of the application and this igniter of request protection.Specifically, the igniter of the inflator for comprising above-mentioned bar component is protected in open and request.
In the preferred embodiment of igniter according to the present invention, contact plug is connected to the axial end of bar component by bridging line.Bridging line can across and/or contiguous cartridge ignition material extend.Preferably, cartridge ignition material is by being closely attached to the lid encapsulation of the axial end of bar component.As a rule, igniter can comprise bar component and other sub-component of component of especially lighting a fire.Bar component is formed by contact plug, injection molding part and fixed component and seal member.On the other hand, component of lighting a fire comprises lid, seed material and bridging line.
Another independent aspects of the present invention relates to the inflator comprising aforementioned rod component and/or igniter.In inflator according to the present invention, material can be placed through especially for fixed component bar component and/or igniter are anchored in inflator and combine to material and/or form closure member and be connected to the housing of inflator.Material connects preferably by welding realization to material.Especially can be connected by curling and/or roller polishing way of realization adaptation.
In the advantageous variant of inflator according to the present invention, fixed component comprises distance piece, injection molding part is set to and separates with the housing of inflator.By this kind of mode, to avoid in the process triggering inflator such as or the disadvantageous distortion depending on temperature of the injection molding part be made up of plastic material in the process of other less desirable increase of the temperature of inflator housing.
Finally, in the scope of the application, open and request protection comprises the air bag module of above-mentioned inflator and/or igniter and/or bar component.As a rule, air bag module can additionally comprise the air bag being connected to inflator, makes triggering inflator cause the inflation of air bag.
Accompanying drawing explanation
The present invention is explained with reference to the accompanying drawings hereinafter by embodiment, in the accompanying drawings:
Fig. 1 a shows the longitudinal cross-section view according to bar component of the present invention crossing and be formed as comprising fixed component;
Fig. 1 b shows the longitudinal cross-section view according to igniter of the present invention crossing and comprise the bar component being formed as having fixed component;
Fig. 2 shows the viewgraph of cross-section of the fixed component according to bar component of the present invention of the preferred embodiment according to the seal member comprising the groove be formed as in fixed component;
Fig. 3 show according to another preferred embodiment according to bar element cross-section view of the present invention, seal member is O shape ring;
Fig. 4 shows the viewgraph of cross-section of the fixed component according to bar component of the present invention according to another preferred embodiment, forms seal member by the groove in fixed component and annular extension;
Fig. 5 shows the viewgraph of cross-section of the fixed component according to bar component of the present invention according to another preferred embodiment, and wherein undercut becomes the seal member in fixed component;
Fig. 6 shows the viewgraph of cross-section according to bar component fixed component of the present invention according to another preferred embodiment, and wherein seal member is formed as additional sealing element;
Fig. 7 show according to another preferred embodiment according to bar element cross-section view of the present invention, seal member is the form of O shape ring;
Fig. 8 shows the cross sectional longitudinal view according to igniter of the present invention being in the enclosure interior of the inflator in installment state crossed according to preferred embodiment, and its middle shell is solder-connected to fixed component by radial direction;
Fig. 9 shows the igniter in the housing of inflator according to Fig. 8, and the connection between housing with fixed component is axial welding;
Figure 10 shows the longitudinal cross-section view of the igniter crossed according to the enclosure interior at inflator of the present invention, welds the connection that realizes between housing and fixed component and form fixed component by the ring with cylindrical part by radial direction.
Figure 11 shows the viewgraph of cross-section of the igniter crossed according to Fig. 8, wherein by the curling connection achieved between igniter and inflator housing; And
Figure 12 show according to another preferred embodiment according to bar element cross-section view of the present invention, wherein seal member is adhesive seal material.
Detailed description of the invention
Fig. 1 a shows the master-plan according to bar component 11 of the present invention as the independent sub-component itself for igniter according to the present invention.Bar component 11 comprises two contact plugs 14 of the through hole 21 extending through fixed component 20.Fixed component 20 can have the disk 22 of central through hole 21 in Shi center.Fixed component 20 is made of metal.Contact plug 14 comprises the conductive material of especially metal.As apparent by Fig. 1 a, contact plug 14 comprises groove 15.
Contact plug 14 and fixed component 20 are embedded in injection molding part 13.Specifically, by injection molding around contact plug 14 and fixed component 20, injection molding part 13 can be formed thus.By obtaining at the groove 15 at contact plug 14 place between contact plug 14 and injection molding part 13 fully and the connection of Fluid Sealing.Form contact plug 14 at axial end of injection molding part 13 and protrude into socket wherein.Contact plug 14 can be electrically connected to IGNITION CONTROL via socket.
Unshowned seal member 32 in fig 1 a is also comprised for the sake of clarity according to the bar component 11 of Fig. 1 a.Seal member 32 is preferably formed on fixed component 20 or can has multiple structure in fixed component 20.The preferable configuration of the fixed component 20 comprising seal member 32 of Examples below has been shown in Fig. 2 to Fig. 7.
Fig. 1 b shows the master-plan according to igniter 10 of the present invention comprised according to the bar component 11 as shown in Fig. 1 a of the present invention.Igniter 10 especially has two independent sub-components, the first sub-component formed by bar component 11 and the second sub-component formed by component 12 of lighting a fire.As previously mentioned, bar component 11 can be specially the sub-component manufactured in advance, and component 12 of then lighting a fire can be assemblied on the sub-component that manufactures in advance.
The bar component 11 of the igniter 10 of Fig. 1 b has the identical structure as further described above with reference to Fig. 1 a.Here additionally igniting component 12 is arranged on the second axial end of bar component 11.Igniting component 12 comprise with contact plug 14 electrical interconnection and/or the bridging line 16 of bridge joint contact plug 14.Bridging line 16 passes the first seed material 17 and first seed material 17 that correspondingly contact is directly contiguous with it.Above the first seed material 17, the second seed material 18 is arranged as directly contiguous there.Seed material 17,18 is filled in the lid 19 that slides above the second axial end of bar component 11 and is closely connected to bar component 11 at the second axial end.Contrast with bar component 11, component 12 of preferably lighting a fire does not manufacture in advance but is assemblied in the fabrication process above bar component 11.For this purpose, the first bridging line 16 is arranged between contact plug 14, is preferably welded between its end side, and after this seed material 17,18 assembled and close the latter eventually through lid 19.In layout and correspondingly welded bridge wiring 16 there can also be compressed in after being filled in by seed material 17,18 in lid 19 according to process, and then by this kind of mode, filling is connected to bar component 11 with the lid 19 of seed material 17,18 particularly by ultrasonic bonding.
Equally in this case, unshowned seal member 32 in Figure 1b is similarly comprised for the sake of clarity according to the bar component 11 of the igniter 10 of Fig. 1 b.As mentioned above, seal member 32 is preferably formed on fixed component 20 or can has multiple structure in fixed component 20.The preferable configuration of the fixed component 20 comprising seal member 32 hereafter described in detail has been shown in Fig. 2 to Fig. 7.
Substantially different selection for seal bar component 11 is imaginabale.In one aspect, additional sealing element 33 can be arranged as on fixed component 20 or be positioned at the seal member 32 at fixed component 20 place.These additional sealing elements 32 are such as diaphragm seal, shrinkage hose and/or fluid or adhesive seal material 36.The possible design variant of the fixed component 20 comprising additional sealing element 33 has been shown in Fig. 2, Fig. 3, Fig. 6 and Fig. 7.Before injection molding part 13 injection mo(u)lding is around fixed component 20, shown here additional sealing element 33 is preferably arranged and is correspondingly fixed on fixed component 20.
In addition, can be set to make especially to be arranged on fixed component 20 with the additional sealing element 33 of the form of adhesive seal material 36 after the injection mo(u)lding of injection molding part 13.This modification has been shown in Figure 12.
Finally can also form seal member 32 by the geometrical construction of fixed component 20.Such as, fixed component 20 can show undercutting 31 and/or groove 24.Illustrate in Fig. 4 and Fig. 5 and be geometrically designed to make hermetic unit 32 be formed in the modification of the fixed component 20 in fixed component 20.
According in the embodiment of Fig. 2, seal member 32 is formed as the diaphragm seal 47 on fixed component 20.Fixed component 20 especially comprises the rosette 22 with through hole 21.In addition, disk 22 comprises the end face 23 being wherein furnished with groove 24.Groove 24 extends around through hole 21 with round-shaped.Groove 24 and through hole 21 can be arranged especially with one heart.Seal member 32 is arranged in groove 24.According in the embodiment of Fig. 2, seal member 32 is the diaphragm seals 47 be bonded in groove 24.Alternatively, groove 24 can also be used to receive adhesive seal material 36.
According in the embodiment of Fig. 3, fixed component 20 is similarly the form of the disk 22 additionally comprising annular extension 25.Annular extension 25 has the external diameter less than the external diameter of disk 22.External diameter along annular extension 25 forms arch portion 27, converts clamping recess 26 in the transitional region of this arch portion between annular extension 25 and disk 22.Especially, clamping recess 26 can form the rounded corners of the transitional region between disk 22 and annular extension 25.Seal member 32 is furnished with in clamping recess 26.According in the embodiment of Fig. 3, seal member 32 is the O shape rings 39 be fixed in clamping recess 26.Arch portion 27 prevents O shape ring 39 to be separated with annular extension 25 and from annular extension 25 landing.Substitute O shape ring 39, shrinkage hose can also be used as seal member 32.In addition, it is evident that fixed component 20 has through hole 21 in figure 3, wherein through hole 21 in the region of disk 22 than in the region of annular extension 25, there is less diameter of section.
Fig. 4 shows another advantageous variant of fixed component 20, and wherein fixed component 20 adopts the shape of disk 22 equally.Through hole 21 extends centrally through disk 22.In addition, fixed component 20 is included in the annular extension 25 on the both sides of disk 22.The diameter of section in each annular extension 25 of through hole 21 is larger than the diameter of section in the integrated disc portions of disk 22 or fixed component 20.Specifically, through hole 21 has the conical taper 30 be arranged between disk 22 and lower annular extension 25.
Annular groove 24 is formed in each end face 23 of disk 22.Each annular groove 24 has the bottom surface 28 tilting to extend between two sides 29.The bottom surface 28 of groove 24 tilts towards the longitudinal axis of fixed component 20 and/or rotating shaft.In other words, groove 24 ratio in the region of medial surface 29 is darker in the region of lateral surface 29.
Groove 24 is limited by the annular extension 25 on neighboring in upper surface 23.In other words, the radial outer side 29 of groove 24, when aligned, converts the through hole 21 of annular extension 25 and correspondingly annular extension 25 to.Groove 24 on the downside of disk 22 has radially medial surface 29 thus, and when aligned, radially medial surface 29 converts annular extension 25 to, especially converts the neighboring of annular extension 25 to.
Groove 24 entirety forms undercutting or material hole at fixed component 20 place, and to make when injection molding part 13 injection mo(u)lding is around fixed component 20, the plastic material of injection molding part 13 infiltrates groove 24.By this kind of mode, the connection between injection molding part 13 and fixed component 20 closes in a fluid tight manner along the connection distance/region of the amplification formed thus.
Fig. 5 shows another modification of fixed component 20, and fixed component 20 is geometrically constructed so that seal member 32 is formed wherein.Undercutting 31 particularly by end face 23 place being arranged on fixed component 20 forms seal member 32.Specifically, fixed component 20 is the disks 22 comprising two end faces 23, and it has the through hole 21 extending centrally through disk 22.End face 23 comprises undercutting 31, and wherein preferably multiple undercutting 32 is arranged on different radiuses along end face 23.Undercutting 31 can be annular groove 24.In the embodiment as shown, undercutting 31 is the forms being centered around the recess extended at a distance from each other around the through hole 21 on end face 23.Plastic material due to injection molding part 13 in the injection molding process around fixed component 20 flows into be cut in 31 on earth, and therefore undercutting 31 allows the sufficient fluid-tight seal between fixed component 20 and injection molding part 13.Therefore in the injection molding process of injection molding part 13, sealing is achieved basically by contraction process.
Each embodiment showing the fixed component 20 of the additional sealing element 33 be equipped with as seal member 32 in Fig. 6 and Fig. 7.In two modification, fixed component 20 is all the disk 22 with central through hole 21 and two end faces 23.According in the embodiment of Fig. 6, form additional sealing element 33 by extending through through hole 21 at least in part and having at the sealing ring 34 of two sealing flanges 35 of end face 23 upper annular extension.Comprise cylindrical inner profile according to the sealing ring 34 of Fig. 6 thus and reach through hole 21 at least in part.As shown in the cross section of Fig. 6, sealing ring 34 axially in extension not adjacent through-holes 21 all surfaces but comprise at least one and axially extend interruption, in the injection molding process subsequently of injection molding part 13, plastic material may flow through and axially extend interruption.It is several that sealing ring 34 can show in these, and described interruption is formed in the pipeline for plastic material flowing in injection molding process thus, makes the disk 22 that can directly be attached in the region of through hole 21 at these position plastic materials.
According in the embodiment of Fig. 7, additional sealing element 33 is similarly configured to sealing ring 34, and this sealing ring 34 has disc-shape.The end face 23 that sealing ring 34 is arranged in disk 22 comprises the sealing ring perforation of the through hole 21 being greater than disk 22.Preferably, sealing ring 34 and disk 22 are arranged concentrically with respect to one another.Generally, sealing ring 34 can be formed by adhesive seal material 36.
According in the embodiment of Fig. 6, encapsulant 36 is applied to the both sides of disk 22.According in the embodiment of Fig. 7, encapsulant 36 is applied to the side of disk 22.
Fig. 8 to Figure 11 shows the different modification for igniter 10 and corresponding the thin end of the scroll component 11 being connected to the housing 40 of inflator.Housing 40 is preferably tubulose and is made of metal.Igniter 10 and corresponding connection between bar component 11 with housing 40 are made substantially under the assistance of the same fixed component 20 be made of metal.By this kind of mode, igniter 10 and corresponding bar component 11 can be such as included in inflator by the solder joints between housing 40 and fixed component 20.Fig. 8 and Fig. 9 shows the advantageous variant for the solder joints between fixed component 20 and housing 40.Such as, fixed component 20 can be fixed to housing 40 (Fig. 8) by radial welding 42.Alternatively or additionally, axially welding 42 can be provided to guarantee that the material between fixed component 20 with housing 40 is connected (Fig. 9) to material.
Figure 10 shows another modification for igniter 10 and corresponding the thin end of the scroll component 11 being connected to the housing 40 of inflator.Use same radial direction welding 42 so that fixed component 20 is connected to housing 40 in this case.As compared to the embodiment according to Fig. 8 with Fig. 9, according to the fixed component 20 of the bar component 11 of Figure 10, there is the ring 44 that annular shape or formation have cylindrical part 45 and disc-like end flanges 46.Housing 40 can not fully slide above igniter 10 or bar component thus, but the disc-like end flanges 46 being shelved on fixed component 20 is closely connected to disc-like end flanges 46 by radial welding 42.
Substantially, the solder joints between fixed component 20 with housing 40 can be welded by radial direction, axis is welded or friction welding realizes.
Figure 11 shows wherein igniter 10 and corresponding the thin end of the scroll component 11 and is connected to the modification of housing 40 by curling 43.Housing 40 has tubular form, and wherein igniter 10 is fully arranged in the inside of housing 40.Curling 43 are formed on two end faces 23 of fixed component 20, fixed component 20 are completely fixed in particularly be configured between dual curling curling 43.
Become apparent by Fig. 8 to Figure 11 effect of the present invention.Housing 40 comprises propellant chamber 41, and unshowned propellant will be lighted by trigger point firearm 10.Preferably, with the propellant of compressed tablet or compression ring form when not trigger point firearm 10 in housing 40 of being everlasting, keep the several years.But, must guarantee that trigger point firearm 10 causes the effective of propellant and the igniting of working.Therefore, the moisture protecting the propellant in propellant chamber 41 from the perimeter of inflator is necessary.Therefore the more important thing is and contribute to igniter and the sealing between corresponding the thin end of the scroll component 11 and housing 40.In addition the moisture pathway considered by igniter 10 and corresponding the thin end of the scroll component 11 self is needed.Especially significant interface is between different materials, the transition especially between contact plug 24 and injection molding part 13 and/or between fixed component 20 and injection molding part 13.Make such as to avoid the moisture pathway along contact plug 14 at the groove 15 at contact plug 14 place.According to the present invention, in the region of fixed component 20, be provided with seal member 32, it guarantees that the moisture pathway between fixed component 20 and injection mo(u)lding part 13 is suppressed.Therefore the present invention improves the seal of bar component and the seal of the wherein inflator of Assembly rail component thus in structure when low cost.
Illustrate in Figure 12 that another alternative for seal bar component 11 is selected.Be used as the encapsulant 36 of seal member 32, it is arranged on fixed component 20 after formation injection molding part 13.Specifically, the bar component 11 shown in Figure 12 comprises the bar component 11 with through hole 21, and the contact plug 14 comprising groove 15 extends through described through hole 21.Fixed component 20 and contact plug 14 are embedded in injection molding part 13, wherein in the fabrication process, first fixed component 20 is located, contact plug 14 is aimed at subsequently relative to fixed component 20, and last fixed component 20 and contact plug 14 by injection molding by around, to form injection molding part 13.Filler opening 37 and annular gap 38 is formed in injection mo(u)lding part 13.Annular gap 38 extends around injection molding part 13 ring-type and is arranged in above fixed component 20.Annular gap 38 is preferably opened towards the neighboring of injection molding part 13.Two or more filling apertures 37 of the annular surface 48 leading to injection molding part 13 are provided with perpendicular to annular gap 38.After formation injection molding part 13, introduce adhesive seal material 36, preferably via filling aperture 37, adhesive seal material 36 is pressed in annular gap 38.Encapsulant 36 is fully filled annular gap 38 and is directly arranged on fixed component 20, is especially arranged on the end face 23 of fixed component 20.Fixed component 20 is with the form of disk 22.
Reference numerals list
10 igniters
11 bar components
12 igniting components
13 injection molding parts
14 contact plugs
15 grooves
16 bridging lines
17 first seed materials
18 second seed materials
19 lids
20 fixed components
21 through holes
22 disks
23 end faces
24 grooves
25 annular extension
26 clamping recess
27 arch portions
28 bottom surfaces
29 sides
30 conical tapers
31 undercutting
32 seal members
33 potted components
34 sealing rings
35 sealing flanges
36 encapsulants
37 fill aperture
38 annular gaps
39 O shape rings
40 housings
41 propellant chamber
42 welding
43 is curling
44 rings
45 cylindrical parts
46 disc-like end flanges
47 diaphragm seals
48 ring surfaces
Claims (13)
1. a bar component (11), this bar component is as pyrotechnic igniter (10), be particularly useful for comprising the sub-component manufactured in advance of the inflator of two the conductive contact pins (14) be embedded in injection molding part (13)
It is characterized in that
Fixed component (20) for described bar component (11) being anchored in described inflator is embedded in described injection molding part (13), and wherein said contact plug (14) extends through the through hole (21) of described fixed component (20) and wherein one or more seal members (32) are formed or are arranged in described fixed component (20) or on described fixed component (20).
2. bar component (11) according to claim 1,
It is characterized in that
Described injection molding part (13) comprises or comprises the plastic material of especially polyphenylene sulfide (PPS), polyphthalamide (PPA), and/or by the plastic material of crosslinking with radiation.
3. bar component (11) according to claim 1 and 2,
It is characterized in that
Described fixed component (20) comprises or comprise metal and/or described fixed component (20) has the diameter of section larger than described injection molding part (13), wherein preferably, described fixed component (20) is the form with disk (22) or ring (44).
4. the bar component (11) according to any one of the claims,
It is characterized in that
At least one seal member (32), as additional sealing element, is especially formed on described fixed component (20) as diaphragm seal (47), shrinkage hose and/or fluid or adhesive seal material (36).
5. bar component (11) according to claim 4,
It is characterized in that
Described additional sealing element (33) is closely connected to described fixed component (20) particularly by bonding and/or sulfuration.
6. the bar component (11) according to claim 4 or 5,
It is characterized in that
Described additional sealing element (33) comprises the O shape ring (39) in the clamping recess (26) being arranged in described fixed component (20).
7. the bar component (11) according to any one of the claims,
It is characterized in that
At least one seal member (32), by the geometry designs of described fixed component (20), is formed in described fixed component (20) particularly by least one recess, at least one undercutting (31) and/or at least one groove (24).
8. the bar component (11) according to any one of the claims,
It is characterized in that
Described seal member (32) is formed or is arranged at least one end face (23) of fixed component (20) or at least one end face (23) is gone up and especially extends through the described through hole (21) of described fixed component (20).
9. the igniter for inflator (10), it comprises the bar component (11) according to any one of the claims.
10. igniter according to claim 9 (10),
It is characterized in that
Described contact plug (14) by extend through and/or contiguous cartridge ignition material (17,18) bridging line (16) is connected to the axial end place of described bar component (11), wherein said cartridge ignition material (17,18) is encapsulated by the lid (19) of the described axial end being closely attached to described bar component (11).
11. 1 kinds of inflators comprising bar component (11) according to any one of the claims and/or igniter (10).
12. inflators according to claim 11,
It is characterized in that
Described fixed component (20) for described bar component (20) and/or described igniter (10) being anchored in described inflator is combined to material by material, particularly by welding and/or by forming closure member, particularly by the curling housing (40) being connected to described inflator, wherein especially, described fixed component (20) forms distance piece, is arranged as separates with the described housing (40) of described inflator to make described injection molding part (13).
13. 1 kinds of air bag modules, it comprises inflator according to any one of the claims and/or igniter (10) and/or bar component (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013020526.3A DE102013020526A1 (en) | 2013-12-11 | 2013-12-11 | POLKÖRPER FOR A PYROTECHNISCHZZNNDER OF A GAS GENERATOR, LIGHTER, GAS GENERATOR AND GASSACK MODULE WITH SUCH A POLISHED BODY |
| DE102013020526.3 | 2013-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104713425A true CN104713425A (en) | 2015-06-17 |
| CN104713425B CN104713425B (en) | 2020-06-16 |
Family
ID=53184866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410722958.1A Active CN104713425B (en) | 2013-12-11 | 2014-12-02 | Rod member for pyrotechnic igniter of inflator, igniter including rod member, inflator, and airbag module |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9455519B2 (en) |
| CN (1) | CN104713425B (en) |
| DE (1) | DE102013020526A1 (en) |
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| CN113085775A (en) * | 2019-12-19 | 2021-07-09 | 肖特股份有限公司 | Metal-anchoring material feed-through, method for the production thereof and use thereof |
| CN113767035A (en) * | 2019-05-01 | 2021-12-07 | 奥托立夫Asp公司 | System and method for sealing airbag inflator base |
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| DE102012217070A1 (en) * | 2012-09-21 | 2014-03-27 | Karsten Schwuchow | Igniter carrier, ignition unit and method for producing an ignition unit |
| DE102017216384A1 (en) * | 2017-09-15 | 2019-03-21 | Joyson Safety Systems Germany Gmbh | inflator |
| WO2019096400A1 (en) * | 2017-11-17 | 2019-05-23 | Trw Airbag Systems Gmbh | Pyrotechnical connecting interface |
| DE102021113570A1 (en) * | 2021-05-26 | 2022-12-01 | Zf Automotive Germany Gmbh | Microgas generator and method of manufacturing a microgas generator |
| JP2024031681A (en) * | 2022-08-26 | 2024-03-07 | 日本化薬株式会社 | gas generator |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102013020526A1 (en) | 2015-06-11 |
| CN104713425B (en) | 2020-06-16 |
| US20150171541A1 (en) | 2015-06-18 |
| US9455519B2 (en) | 2016-09-27 |
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